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#include <fstream>
using namespace std;
int a[1000001];
ifstream fin("elmaj.in");
ofstream fout("elmaj.out");
int main()
{
int e=0, n, x, i,cnt=1,ap=0;
fin>>n;
for(i=1;i<=n;i++)
fin>>a[i];
for(i=1;i<=n;i++)
{
if(a[i]==a[i+1]){cnt++;e=a[i+1];}
else {cnt--;e=a[i];}
if(cnt==-1)cnt==0;
}
for(i=1;i<=n;i++)
{
if(a[i]==e)ap++;
}
if(ap<n/2+1)fout<<-1;
fout<<e<<" "<<ap;
return 0;
}